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Sage Weil 80e755fede ceph: allow writeback of snapped pages older than 'oldest' snapc 
On snap deletion, we don't regenerate ceph_cap_snaps for inodes with dirty
pages because deletion does not affect metadata writeback.  However, we
did run into problems when we went to write back the pages because the
'oldest' snapc is determined by the oldest cap_snap, and that may be the
newer snapc that reflects the deletion.  This caused confusion and an
infinite loop in ceph_update_writeable_page().

Change the snapc checks to allow writeback of any snapc that is equal to
OR older than the 'oldest' snapc.

When there are no cap_snaps, we were also using the realm's latest snapc
for writeback, which complicates ceph_put_wrbufffer_cap_refs().  Instead,
use i_head_snapc, the most snapc used for the most recent ('head') data.
This makes the writeback snapc (ceph_osd_request.r_snapc) _always_ match a
capsnap or i_head_snapc.

Also, in writepags_finish(), drop the snapc referenced by the _page_
and do not assume it matches the request snapc (it may not anymore).

Signed-off-by: Sage Weil <sage@newdream.net>
 		2010-04-01 09:34:36 -07:00
..
9p 9p: Skip check for mandatory locks when unlocking 2010-03-13 09:05:37 -06:00
adfs pass writeback_control to ->write_inode 2010-03-05 13:25:52 -05:00
affs Merge branch 'for-next' into for-linus 2010-03-08 16:55:37 +01:00
afs AFS: Potential null dereference 2010-03-22 09:57:19 -07:00
autofs
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autofs4 Use kill_litter_super() in autofs4 ->kill_sb() 2010-03-03 14:07:54 -05:00
befs befs: fix leak 2010-02-07 03:06:21 -05:00
bfs pass writeback_control to ->write_inode 2010-03-05 13:25:52 -05:00
btrfs Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable 2010-03-18 16:50:55 -07:00
cachefiles CacheFiles: Fix a race in cachefiles_delete_object() vs rename 2010-02-20 10:06:35 -05:00
ceph ceph: allow writeback of snapped pages older than 'oldest' snapc 2010-04-01 09:34:36 -07:00
cifs Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6 2010-03-19 09:36:18 -07:00
coda
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configfs Fix configfs leak 2010-01-14 09:05:42 -05:00
cramfs
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debugfs Lose the new_name argument of fsnotify_move() 2010-02-08 14:38:36 -05:00
devpts devpts_get_tty() should validate inode 2009-12-11 15:18:05 -08:00
dlm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-03-12 16:04:50 -08:00
ecryptfs ecryptfs: use after free 2010-01-19 22:36:06 -06:00
efs
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exofs pass writeback_control to ->write_inode 2010-03-05 13:25:52 -05:00
exportfs
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ext2 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 2010-03-05 13:20:53 -08:00
ext3 ext3: fix broken handling of EXT3_STATE_NEW 2010-03-29 14:30:19 -07:00
ext4 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 2010-03-25 14:10:53 -07:00
fat Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6 2010-03-12 16:35:21 -08:00
freevxfs
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fscache SLOW_WORK: CONFIG_SLOW_WORK_PROC should be CONFIG_SLOW_WORK_DEBUG 2010-03-29 09:14:47 -07:00
fuse Merge branch 'for-next' into for-linus 2010-03-08 16:55:37 +01:00
gfs2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes 2010-03-13 14:38:53 -08:00
hfs pass writeback_control to ->write_inode 2010-03-05 13:25:52 -05:00
hfsplus pass writeback_control to ->write_inode 2010-03-05 13:25:52 -05:00
hostfs
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hpfs Don't mess with generic_permission() under ->d_lock in hpfs 2010-03-03 14:07:58 -05:00
hppfs hppfs can use existing proc_mnt, no need for do_kern_mount() in there 2010-03-03 14:08:00 -05:00
hugetlbfs Untangling ima mess, part 1: alloc_file() 2009-12-16 12:16:47 -05:00
isofs Merge branch 'for-2.6.33' of git://linux-nfs.org/~bfields/linux 2009-12-16 10:43:34 -08:00
jbd Merge branch 'for-next' into for-linus 2010-03-08 16:55:37 +01:00
jbd2 jbd2: clean up an assertion in jbd2_journal_commit_transaction() 2010-02-24 12:11:20 -05:00
jffs2 jffs2: fix up rb_root initializations to use RB_ROOT 2010-03-17 18:43:47 -07:00
jfs Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 2010-03-05 13:20:53 -08:00
lockd lockd: don't clear sm_monitored on nsm_reboot_lookup 2010-02-08 16:20:35 -05:00
logfs [LogFS] Erase new journal segments 2010-03-29 21:14:52 +02:00
minix pass writeback_control to ->write_inode 2010-03-05 13:25:52 -05:00
ncpfs
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nfs NFS: don't try to decode GETATTR if DELEGRETURN returned error 2010-03-22 05:34:13 -04:00
nfs_common
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nfsd Merge branch 'for-next' into for-linus 2010-03-08 16:55:37 +01:00
nilfs2 nilfs2: fix imperfect completion wait in nilfs_wait_on_logs 2010-03-24 01:17:20 +09:00
nls
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notify switch inotify_user to anon_inode 2010-02-19 03:35:12 -05:00
ntfs ntfs: use bitmap_weight 2010-03-17 18:43:47 -07:00
ocfs2 ocfs2: Fix a race in o2dlm lockres mastery 2010-03-23 18:22:59 -07:00
omfs pass writeback_control to ->write_inode 2010-03-05 13:25:52 -05:00
openpromfs
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partitions fs/partition/msdos: fix unusable extended partition for > 512B sector 2010-03-24 16:31:22 -07:00
proc kcore: fix test for end of list 2010-03-24 16:31:22 -07:00
qnx4 fs/qnx4: decrement sizeof size in strncmp 2010-02-04 11:55:46 +01:00
quota quota: stop using QUOTA_OK / NO_QUOTA 2010-03-05 00:20:31 +01:00
ramfs nommu: fix shared mmap after truncate shrinkage problems 2010-01-16 12:15:40 -08:00
reiserfs reiserfs: properly honor read-only devices 2010-03-24 16:31:21 -07:00
romfs fix leak in romfs_fill_super() 2010-01-26 22:22:26 -05:00
smbfs
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squashfs Squashfs: get rid of obsolete definition in header file 2010-03-05 15:35:35 +00:00
sysfs sysfs: Kill unused sysfs_sb variable. 2010-03-07 17:04:52 -08:00
sysv pass writeback_control to ->write_inode 2010-03-05 13:25:52 -05:00
ubifs Revert "lib: build list_sort() only if needed" 2010-03-07 09:54:44 -08:00
udf Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6 2010-03-12 16:22:50 -08:00
ufs ufs: make solaris fsck happy 2010-03-12 15:52:35 -08:00
xfs xfs: don't warn about page discards on shutdown 2010-03-16 15:40:53 -05:00
Kconfig Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2010-03-19 09:43:06 -07:00
Kconfig.binfmt
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Makefile Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2010-03-19 09:43:06 -07:00
aio.c aio: remove unused field 2009-12-16 07:20:13 -08:00
anon_inodes.c anon_inodes: mark the anon inode private 2010-03-12 16:25:23 -08:00
attr.c fs: use rlimit helpers 2010-03-06 11:26:29 -08:00
bad_inode.c
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binfmt_aout.c fs/binfmt_aout.c: fix pointer warnings 2010-03-24 16:31:19 -07:00
binfmt_elf.c coredump: pass mm->flags as a coredump parameter for consistency 2010-03-06 11:26:46 -08:00
binfmt_elf_fdpic.c FDPIC: For-loop in elf_core_vma_data_size() is incorrect 2010-03-24 16:43:29 -07:00
binfmt_em86.c
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binfmt_flat.c fs: use rlimit helpers 2010-03-06 11:26:29 -08:00
binfmt_misc.c
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binfmt_script.c
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binfmt_som.c Split 'flush_old_exec' into two functions 2010-01-29 08:22:01 -08:00
bio-integrity.c block: fix bugs in bio-integrity mempool usage 2010-01-30 20:28:19 +01:00
bio.c Merge branch 'for-next' into for-linus 2010-03-08 16:55:37 +01:00
block_dev.c freeze_bdev: don't deactivate successfully frozen MS_RDONLY sb 2010-02-07 03:06:21 -05:00
buffer.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-03-12 16:04:50 -08:00
char_dev.c
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compat.c Add generic sys_old_select() 2010-03-12 15:52:32 -08:00
compat_binfmt_elf.c elf coredump: replace ELF_CORE_EXTRA_* macros by functions 2010-03-06 11:26:45 -08:00
compat_ioctl.c fs/compat_ioctl.c: suppress two warnings 2010-03-06 11:26:35 -08:00
dcache.c fix race in d_splice_alias() 2010-03-03 14:13:08 -05:00
dcookies.c
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direct-io.c dio: fix use-after-free 2009-12-17 04:52:13 -05:00
drop_caches.c
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eventfd.c eventfd - allow atomic read and waitqueue remove 2010-01-25 12:26:38 -02:00
eventpoll.c anonfd: Allow making anon files read-only 2009-12-22 12:27:34 -05:00
exec.c coredump: suppress uid comparison test if core output files are pipes 2010-03-06 11:26:46 -08:00
fcntl.c fs: use rlimit helpers 2010-03-06 11:26:29 -08:00
fifo.c
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file.c fs: use rlimit helpers 2010-03-06 11:26:29 -08:00
file_table.c vfs: take f_lock on modifying f_mode after open time 2010-03-06 11:26:25 -08:00
filesystems.c
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fs-writeback.c pass writeback_control to ->write_inode 2010-03-05 13:25:52 -05:00
fs_struct.c
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generic_acl.c make generic_acl slightly more generic 2009-12-16 12:16:49 -05:00
inode.c dquot: move dquot initialization responsibility into the filesystem 2010-03-05 00:20:30 +01:00
internal.h Take vfsmount_lock to fs/internal.h 2010-03-03 14:07:59 -05:00
ioctl.c
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ioprio.c
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libfs.c libfs: Unexport and kill simple_prepare_write 2010-03-03 13:00:17 -05:00
locks.c Merge branch 'for-next' into for-linus 2010-03-08 16:55:37 +01:00
mbcache.c
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mpage.c Fix misspellings of "invocation" in comments. 2010-02-04 11:55:45 +01:00
namei.c Restore LOOKUP_DIRECTORY hint handling in final lookup on open() 2010-03-26 12:41:05 -04:00
namespace.c vfs: add NOFOLLOW flag to umount(2) 2010-03-03 14:08:00 -05:00
nfsctl.c Switch may_open() and break_lease() to passing O_... 2010-03-03 13:00:21 -05:00
no-block.c
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open.c Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 2010-03-05 13:20:53 -08:00
pipe.c fs: no games with DCACHE_UNHASHED 2009-12-17 10:51:40 -05:00
pnode.c Kill CL_PROPAGATION, sanitize fs/pnode.c:get_source() 2010-03-03 13:00:22 -05:00
pnode.h VFS: Clean up shared mount flag propagation 2010-03-03 14:07:55 -05:00
posix_acl.c
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read_write.c do_sync_read/write() should set kiocb.ki_nbytes to be consistent 2010-03-24 16:43:29 -07:00
read_write.h
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readdir.c
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select.c Add generic sys_old_select() 2010-03-12 15:52:32 -08:00
seq_file.c seq_file: fix new kernel-doc warnings 2010-03-07 15:48:26 -08:00
signalfd.c anonfd: Allow making anon files read-only 2009-12-22 12:27:34 -05:00
splice.c
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stack.c VFS/fsstack: handle 32-bit smp + preempt + large files in fsstack_copy_inode_size 2009-12-17 10:58:17 -05:00
stat.c Add unlocked version of inode_add_bytes() function 2009-12-23 13:33:54 +01:00
super.c Mirror MS_KERNMOUNT in ->mnt_flags 2010-03-03 14:08:00 -05:00
sync.c quota: move code from sync_quota_sb into vfs_quota_sync 2010-03-05 00:20:24 +01:00
timerfd.c anonfd: Allow making anon files read-only 2009-12-22 12:27:34 -05:00
utimes.c
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xattr.c sanitize xattr handler prototypes 2009-12-16 12:16:49 -05:00
xattr_acl.c
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